wctrans(3)

1wctrans(3)                 Library Functions Manual                 wctrans(3)
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NAME

6       wctrans - wide-character translation mapping
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LIBRARY

9       Standard C library (libc, -lc)
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SYNOPSIS

12       #include <wctype.h>
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14       wctrans_t wctrans(const char *name);
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DESCRIPTION

17       The  wctrans_t type represents a mapping which can map a wide character
18       to another wide character.  Its nature is implementation-dependent, but
19       the  special  value  (wctrans_t) 0 denotes an invalid mapping.  Nonzero
20       wctrans_t values can be passed to the towctrans(3) function to actually
21       perform the wide-character mapping.
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23       The  wctrans()  function returns a mapping, given by its name.  The set
24       of valid names depends on the LC_CTYPE category of the current  locale,
25       but the following names are valid in all locales.
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27           "tolower" - realizes the tolower(3) mapping
28           "toupper" - realizes the toupper(3) mapping
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RETURN VALUE

31       The  wctrans()  function  returns  a  mapping descriptor if the name is
32       valid.  Otherwise, it returns (wctrans_t) 0.
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ATTRIBUTES

35       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
36       tributes(7).
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38       ┌─────────────────────────────────────┬───────────────┬────────────────┐
39       │Interface                            │ Attribute     │ Value          │
40       ├─────────────────────────────────────┼───────────────┼────────────────┤
41       │wctrans()                            │ Thread safety │ MT-Safe locale │
42       └─────────────────────────────────────┴───────────────┴────────────────┘
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STANDARDS

45       C11, POSIX.1-2008.
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HISTORY

48       POSIX.1-2001, C99.
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NOTES

51       The  behavior of wctrans() depends on the LC_CTYPE category of the cur‐
52       rent locale.
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